Table 2.
Reference ranges for the main iron status parameters in term and preterm neonates.
| Cord Blood | Capillary Blood (within 72 h from Birth) |
||||
|---|---|---|---|---|---|
| Preterm | Term | Preterm | Term | ||
| Hb (g/dL) |
12.4–19.2 | 13.3–18.4 | 14.5–22.5 | Lorenz et al. 2013 [57] | |
| MCV (fL) |
103–133 | 97.8–118.5 | 95–121 | Lorenz et al. 2013 [57] | |
| Serum ferritin (µg/L) | 35–267 | 40–309 | Siddappa et al. 2007 [28] | ||
| STfR1 (mg/L) |
6.1–13.7 | 6.4–10.6 | Sweet e al. 2001 [58] | ||
| ZnPP/H ratio (µmol/mol) | 55–135.5 | 49.6–108.4 | Juul et al. 2003 [59] | ||
| RET-He (pg) |
27.4–36 | 24.3–36.2 | 25.5–37.6 | Löfving et al. 2018 [60] Lorenz et al. 2017 [61] |
|
Hb, hemoglobin; MCV, mean corpuscular volume; sTfR1, serum transferrin receptor; ZnPP/He ratio, zinc protoporphyrin to heme ratio; RET-HE, reticulocyte hemoglobin equivalent. All are central 95% reference intervals, except for SF that is central 90% and STfR1 that is the interquartile range.